1 2 /*--------------------------------------------------------------------*/ 3 /*--- Platform-specific syscalls stuff. syswrap-x86-solaris.c ---*/ 4 /*--------------------------------------------------------------------*/ 5 6 /* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2011-2015 Petr Pavlu 11 setup (at) dagobah.cz 12 13 This program is free software; you can redistribute it and/or 14 modify it under the terms of the GNU General Public License as 15 published by the Free Software Foundation; either version 2 of the 16 License, or (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, but 19 WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 26 02111-1307, USA. 27 28 The GNU General Public License is contained in the file COPYING. 29 */ 30 31 #if defined(VGP_x86_solaris) 32 33 #include "libvex_guest_offsets.h" 34 #include "pub_core_basics.h" 35 #include "pub_core_vki.h" 36 #include "pub_core_threadstate.h" 37 #include "pub_core_aspacemgr.h" 38 #include "pub_core_xarray.h" 39 #include "pub_core_clientstate.h" 40 #include "pub_core_debuglog.h" 41 #include "pub_core_libcassert.h" 42 #include "pub_core_libcbase.h" 43 #include "pub_core_libcfile.h" 44 #include "pub_core_libcprint.h" 45 #include "pub_core_libcsignal.h" 46 #include "pub_core_machine.h" // VG_(get_SP) 47 #include "pub_core_mallocfree.h" 48 #include "pub_core_options.h" 49 #include "pub_core_tooliface.h" 50 #include "pub_core_signals.h" 51 #include "pub_core_syscall.h" 52 #include "pub_core_syswrap.h" 53 54 #include "priv_types_n_macros.h" 55 #include "priv_syswrap-generic.h" 56 #include "priv_syswrap-solaris.h" 57 58 /* Call f(arg1), but first switch stacks, using 'stack' as the new stack, and 59 use 'retaddr' as f's return-to address. Also, clear all the integer 60 registers before entering f. */ 61 __attribute__((noreturn)) 62 void ML_(call_on_new_stack_0_1)(Addr stack, /* 4(%esp) */ 63 Addr retaddr, /* 8(%esp) */ 64 void (*f)(Word), /* 12(%esp) */ 65 Word arg1); /* 16(%esp) */ 66 __asm__ ( 67 ".text\n" 68 ".globl vgModuleLocal_call_on_new_stack_0_1\n" 69 "vgModuleLocal_call_on_new_stack_0_1:\n" 70 " movl %esp, %esi\n" /* remember old stack pointer */ 71 " movl 4(%esi), %esp\n" /* set stack */ 72 " pushl $0\n" /* align stack */ 73 " pushl $0\n" /* align stack */ 74 " pushl $0\n" /* align stack */ 75 " pushl 16(%esi)\n" /* arg1 to stack */ 76 " pushl 8(%esi)\n" /* retaddr to stack */ 77 " pushl 12(%esi)\n" /* f to stack */ 78 " movl $0, %eax\n" /* zero all GP regs */ 79 " movl $0, %ebx\n" 80 " movl $0, %ecx\n" 81 " movl $0, %edx\n" 82 " movl $0, %esi\n" 83 " movl $0, %edi\n" 84 " movl $0, %ebp\n" 85 " ret\n" /* jump to f */ 86 " ud2\n" /* should never get here */ 87 ".previous\n" 88 ); 89 90 /* This function is called to setup a context of a new Valgrind thread (which 91 will run the client code). */ 92 void ML_(setup_start_thread_context)(ThreadId tid, vki_ucontext_t *uc) 93 { 94 ThreadState *tst = VG_(get_ThreadState)(tid); 95 UWord *stack = (UWord*)tst->os_state.valgrind_stack_init_SP; 96 UShort cs, ds, ss, es, fs, gs; 97 98 VG_(memset)(uc, 0, sizeof(*uc)); 99 uc->uc_flags = VKI_UC_CPU | VKI_UC_SIGMASK; 100 101 /* Start the thread with everything blocked. */ 102 VG_(sigfillset)(&uc->uc_sigmask); 103 104 /* Set up the stack, it should be always 16-byte aligned before doing 105 a function call, i.e. the first parameter is also 16-byte aligned. */ 106 vg_assert(VG_IS_16_ALIGNED(stack)); 107 stack -= 1; 108 stack[0] = 0; /* bogus return value */ 109 stack[1] = (UWord)tst; /* the parameter */ 110 111 /* Set up the registers. */ 112 uc->uc_mcontext.gregs[VKI_EIP] = (UWord)ML_(start_thread_NORETURN); 113 uc->uc_mcontext.gregs[VKI_UESP] = (UWord)stack; 114 115 /* Copy segment registers. */ 116 __asm__ __volatile__( 117 "movw %%cs, %[cs]\n" 118 "movw %%ds, %[ds]\n" 119 "movw %%ss, %[ss]\n" 120 "movw %%es, %[es]\n" 121 "movw %%fs, %[fs]\n" 122 "movw %%gs, %[gs]\n" 123 : [cs] "=m" (cs), [ds] "=m" (ds), [ss] "=m" (ss), [es] "=m" (es), 124 [fs] "=m" (fs), [gs] "=m" (gs)); 125 uc->uc_mcontext.gregs[VKI_CS] = cs; 126 uc->uc_mcontext.gregs[VKI_DS] = ds; 127 uc->uc_mcontext.gregs[VKI_SS] = ss; 128 uc->uc_mcontext.gregs[VKI_ES] = es; 129 uc->uc_mcontext.gregs[VKI_FS] = fs; 130 uc->uc_mcontext.gregs[VKI_GS] = gs; 131 } 132 133 /* Architecture-specific part of VG_(save_context). */ 134 void ML_(save_machine_context)(ThreadId tid, vki_ucontext_t *uc, 135 CorePart part) 136 { 137 ThreadState *tst = VG_(get_ThreadState)(tid); 138 struct vki_fpchip_state *fs 139 = &uc->uc_mcontext.fpregs.fp_reg_set.fpchip_state; 140 SizeT i; 141 142 /* CPU */ 143 /* Common registers */ 144 uc->uc_mcontext.gregs[VKI_EIP] = tst->arch.vex.guest_EIP; 145 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_EIP, 146 (Addr)&uc->uc_mcontext.gregs[VKI_EIP], sizeof(UWord)); 147 uc->uc_mcontext.gregs[VKI_EAX] = tst->arch.vex.guest_EAX; 148 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_EAX, 149 (Addr)&uc->uc_mcontext.gregs[VKI_EAX], sizeof(UWord)); 150 uc->uc_mcontext.gregs[VKI_EBX] = tst->arch.vex.guest_EBX; 151 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_EBX, 152 (Addr)&uc->uc_mcontext.gregs[VKI_EBX], sizeof(UWord)); 153 uc->uc_mcontext.gregs[VKI_ECX] = tst->arch.vex.guest_ECX; 154 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_ECX, 155 (Addr)&uc->uc_mcontext.gregs[VKI_ECX], sizeof(UWord)); 156 uc->uc_mcontext.gregs[VKI_EDX] = tst->arch.vex.guest_EDX; 157 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_EDX, 158 (Addr)&uc->uc_mcontext.gregs[VKI_EDX], sizeof(UWord)); 159 uc->uc_mcontext.gregs[VKI_EBP] = tst->arch.vex.guest_EBP; 160 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_EBP, 161 (Addr)&uc->uc_mcontext.gregs[VKI_EBP], sizeof(UWord)); 162 uc->uc_mcontext.gregs[VKI_ESI] = tst->arch.vex.guest_ESI; 163 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_ESI, 164 (Addr)&uc->uc_mcontext.gregs[VKI_ESI], sizeof(UWord)); 165 uc->uc_mcontext.gregs[VKI_EDI] = tst->arch.vex.guest_EDI; 166 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_EDI, 167 (Addr)&uc->uc_mcontext.gregs[VKI_EDI], sizeof(UWord)); 168 uc->uc_mcontext.gregs[VKI_UESP] = tst->arch.vex.guest_ESP; 169 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_ESP, 170 (Addr)&uc->uc_mcontext.gregs[VKI_UESP], sizeof(UWord)); 171 uc->uc_mcontext.gregs[VKI_ESP] = 0; 172 VG_TRACK(post_mem_write, part, tid, (Addr)&uc->uc_mcontext.gregs[VKI_ESP], 173 sizeof(UWord)); 174 175 /* ERR and TRAPNO */ 176 uc->uc_mcontext.gregs[VKI_ERR] = 0; 177 VG_TRACK(post_mem_write, part, tid, (Addr)&uc->uc_mcontext.gregs[VKI_ERR], 178 sizeof(UWord)); 179 uc->uc_mcontext.gregs[VKI_TRAPNO] = 0; 180 VG_TRACK(post_mem_write, part, tid, (Addr)&uc->uc_mcontext.gregs[VKI_TRAPNO], 181 sizeof(UWord)); 182 183 /* Segment registers */ 184 /* Note that segment registers are 16b in VEX, but 32b in mcontext. Thus 185 we tell a tool that the lower 16 bits were copied and that the higher 16 186 bits were set (to zero). (This assumes a little-endian 187 architecture.) */ 188 uc->uc_mcontext.gregs[VKI_CS] = tst->arch.vex.guest_CS; 189 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_CS, 190 (Addr)&uc->uc_mcontext.gregs[VKI_CS], sizeof(UShort)); 191 VG_TRACK(post_mem_write, part, tid, 192 (Addr)(&uc->uc_mcontext.gregs[VKI_CS]) + 2, sizeof(UShort)); 193 uc->uc_mcontext.gregs[VKI_DS] = tst->arch.vex.guest_DS; 194 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_DS, 195 (Addr)&uc->uc_mcontext.gregs[VKI_DS], sizeof(UShort)); 196 VG_TRACK(post_mem_write, part, tid, 197 (Addr)(&uc->uc_mcontext.gregs[VKI_DS]) + 2, sizeof(UShort)); 198 uc->uc_mcontext.gregs[VKI_SS] = tst->arch.vex.guest_SS; 199 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_SS, 200 (Addr)&uc->uc_mcontext.gregs[VKI_SS], sizeof(UShort)); 201 VG_TRACK(post_mem_write, part, tid, 202 (Addr)(&uc->uc_mcontext.gregs[VKI_SS]) + 2, sizeof(UShort)); 203 uc->uc_mcontext.gregs[VKI_ES] = tst->arch.vex.guest_ES; 204 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_ES, 205 (Addr)&uc->uc_mcontext.gregs[VKI_ES], sizeof(UShort)); 206 VG_TRACK(post_mem_write, part, tid, 207 (Addr)(&uc->uc_mcontext.gregs[VKI_ES]) + 2, sizeof(UShort)); 208 uc->uc_mcontext.gregs[VKI_FS] = tst->arch.vex.guest_FS; 209 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_FS, 210 (Addr)&uc->uc_mcontext.gregs[VKI_FS], sizeof(UShort)); 211 VG_TRACK(post_mem_write, part, tid, 212 (Addr)(&uc->uc_mcontext.gregs[VKI_FS]) + 2, sizeof(UShort)); 213 uc->uc_mcontext.gregs[VKI_GS] = tst->arch.vex.guest_GS; 214 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_x86_GS, 215 (Addr)&uc->uc_mcontext.gregs[VKI_GS], sizeof(UShort)); 216 VG_TRACK(post_mem_write, part, tid, 217 (Addr)(&uc->uc_mcontext.gregs[VKI_GS]) + 2, sizeof(UShort)); 218 219 /* Handle eflags (optimistically make all flags defined). */ 220 uc->uc_mcontext.gregs[VKI_EFL] = 221 LibVEX_GuestX86_get_eflags(&tst->arch.vex); 222 VG_TRACK(post_mem_write, part, tid, (Addr)&uc->uc_mcontext.gregs[VKI_EFL], 223 sizeof(UWord)); 224 /* The LibVEX_GuestX86_get_eflags() call calculates eflags value from the 225 CC_OP, CC_DEP1, CC_DEP2, CC_NDEP, DFLAG, IDFLAG and ACFLAG guest state 226 values. The *FLAG values represent one-bit information and are saved 227 without loss of precision into eflags. However when CC_* values are 228 converted into eflags then precision is lost. What we do here is to 229 save unmodified CC_* values into unused ucontext members (the 'long 230 uc_filler[5] and 'int fs->__pad[2]' arrays) so we can then restore the 231 context in ML_(restore_machine_context)() without the loss of precision. 232 This imposes a requirement on client programs to not use these two 233 members. Luckily this is never a case in Solaris-gate programs and 234 libraries. */ 235 /* CC_OP and CC_NDEP are always defined, but we don't want to tell a tool 236 that we just defined uc_filler[0,1]. This helps if someone uses an 237 uninitialized ucontext and tries to read (use) uc_filler[0,1]. Memcheck 238 in such a case should detect this error. */ 239 VKI_UC_GUEST_CC_OP(uc) = tst->arch.vex.guest_CC_OP; 240 VKI_UC_GUEST_CC_NDEP(uc) = tst->arch.vex.guest_CC_NDEP; 241 /* We want to copy shadow values of CC_DEP1 and CC_DEP2 so we have to tell 242 a tool about this copy. */ 243 VKI_UC_GUEST_CC_DEP1(uc) = tst->arch.vex.guest_CC_DEP1; 244 VG_TRACK(copy_reg_to_mem, part, tid, 245 offsetof(VexGuestX86State, guest_CC_DEP1), 246 (Addr)&VKI_UC_GUEST_CC_DEP1(uc), sizeof(UWord)); 247 VKI_UC_GUEST_CC_DEP2(uc) = tst->arch.vex.guest_CC_DEP2; 248 VG_TRACK(copy_reg_to_mem, part, tid, 249 offsetof(VexGuestX86State, guest_CC_DEP2), 250 (Addr)&VKI_UC_GUEST_CC_DEP2(uc), sizeof(UWord)); 251 /* Make another copy of eflags. */ 252 VKI_UC_GUEST_EFLAGS_NEG(uc) = ~uc->uc_mcontext.gregs[VKI_EFL]; 253 /* Calculate a checksum. */ 254 { 255 UInt buf[5]; 256 UInt checksum; 257 258 buf[0] = VKI_UC_GUEST_CC_OP(uc); 259 buf[1] = VKI_UC_GUEST_CC_NDEP(uc); 260 buf[2] = VKI_UC_GUEST_CC_DEP1(uc); 261 buf[3] = VKI_UC_GUEST_CC_DEP2(uc); 262 buf[4] = uc->uc_mcontext.gregs[VKI_EFL]; 263 checksum = ML_(fletcher32)((UShort*)&buf, sizeof(buf) / sizeof(UShort)); 264 /* Store the checksum. */ 265 VKI_UC_GUEST_EFLAGS_CHECKSUM(uc) = checksum; 266 } 267 268 /* FPU */ 269 /* x87 */ 270 vg_assert(sizeof(fs->state) == 108); 271 LibVEX_GuestX86_get_x87(&tst->arch.vex, (UChar*)&fs->state); 272 273 /* Flags and control words */ 274 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->state, 28); 275 /* ST registers */ 276 for (i = 0; i < 8; i++) { 277 Addr addr = (Addr)&fs->state + 28 + i * 10; 278 /* x87 uses 80b FP registers but VEX uses only 64b registers, thus we 279 have to lie here. :< */ 280 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 281 guest_FPREG[i]), addr, sizeof(ULong)); 282 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 283 guest_FPREG[i]), addr + 8, sizeof(UShort)); 284 } 285 286 /* Status word (sw) at exception */ 287 fs->status = 0; 288 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->status, sizeof(fs->status)); 289 290 /* SSE */ 291 fs->mxcsr = LibVEX_GuestX86_get_mxcsr(&tst->arch.vex); 292 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->mxcsr, sizeof(fs->mxcsr)); 293 294 /* MXCSR at exception */ 295 fs->xstatus = 0; 296 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->xstatus, 297 sizeof(fs->xstatus)); 298 299 /* XMM registers */ 300 #define COPY_OUT_XMM(dest, src) \ 301 do { \ 302 dest._l[0] = src[0]; \ 303 dest._l[1] = src[1]; \ 304 dest._l[2] = src[2]; \ 305 dest._l[3] = src[3]; \ 306 } while (0) 307 COPY_OUT_XMM(fs->xmm[0], tst->arch.vex.guest_XMM0); 308 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 309 guest_XMM0), (Addr)&fs->xmm[0], sizeof(U128)); 310 COPY_OUT_XMM(fs->xmm[1], tst->arch.vex.guest_XMM1); 311 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 312 guest_XMM1), (Addr)&fs->xmm[1], sizeof(U128)); 313 COPY_OUT_XMM(fs->xmm[2], tst->arch.vex.guest_XMM2); 314 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 315 guest_XMM2), (Addr)&fs->xmm[2], sizeof(U128)); 316 COPY_OUT_XMM(fs->xmm[3], tst->arch.vex.guest_XMM3); 317 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 318 guest_XMM3), (Addr)&fs->xmm[3], sizeof(U128)); 319 COPY_OUT_XMM(fs->xmm[4], tst->arch.vex.guest_XMM4); 320 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 321 guest_XMM4), (Addr)&fs->xmm[4], sizeof(U128)); 322 COPY_OUT_XMM(fs->xmm[5], tst->arch.vex.guest_XMM5); 323 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 324 guest_XMM5), (Addr)&fs->xmm[5], sizeof(U128)); 325 COPY_OUT_XMM(fs->xmm[6], tst->arch.vex.guest_XMM6); 326 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 327 guest_XMM6), (Addr)&fs->xmm[6], sizeof(U128)); 328 COPY_OUT_XMM(fs->xmm[7], tst->arch.vex.guest_XMM7); 329 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestX86State, 330 guest_XMM7), (Addr)&fs->xmm[7], sizeof(U128)); 331 #undef COPY_OUT_XMM 332 } 333 334 /* Architecture-specific part of VG_(restore_context). */ 335 void ML_(restore_machine_context)(ThreadId tid, vki_ucontext_t *uc, 336 CorePart part, Bool esp_is_thrptr) 337 { 338 ThreadState *tst = VG_(get_ThreadState)(tid); 339 struct vki_fpchip_state *fs 340 = &uc->uc_mcontext.fpregs.fp_reg_set.fpchip_state; 341 342 /* CPU */ 343 if (uc->uc_flags & VKI_UC_CPU) { 344 /* Common registers */ 345 tst->arch.vex.guest_EIP = uc->uc_mcontext.gregs[VKI_EIP]; 346 VG_TRACK(copy_mem_to_reg, part, tid, 347 (Addr)&uc->uc_mcontext.gregs[VKI_EIP], OFFSET_x86_EIP, 348 sizeof(UWord)); 349 tst->arch.vex.guest_EAX = uc->uc_mcontext.gregs[VKI_EAX]; 350 VG_TRACK(copy_mem_to_reg, part, tid, 351 (Addr)&uc->uc_mcontext.gregs[VKI_EAX], OFFSET_x86_EAX, 352 sizeof(UWord)); 353 tst->arch.vex.guest_EBX = uc->uc_mcontext.gregs[VKI_EBX]; 354 VG_TRACK(copy_mem_to_reg, part, tid, 355 (Addr)&uc->uc_mcontext.gregs[VKI_EBX], OFFSET_x86_EBX, 356 sizeof(UWord)); 357 tst->arch.vex.guest_ECX = uc->uc_mcontext.gregs[VKI_ECX]; 358 VG_TRACK(copy_mem_to_reg, part, tid, 359 (Addr)&uc->uc_mcontext.gregs[VKI_ECX], OFFSET_x86_ECX, 360 sizeof(UWord)); 361 tst->arch.vex.guest_EDX = uc->uc_mcontext.gregs[VKI_EDX]; 362 VG_TRACK(copy_mem_to_reg, part, tid, 363 (Addr)&uc->uc_mcontext.gregs[VKI_EDX], OFFSET_x86_EDX, 364 sizeof(UWord)); 365 tst->arch.vex.guest_EBP = uc->uc_mcontext.gregs[VKI_EBP]; 366 VG_TRACK(copy_mem_to_reg, part, tid, 367 (Addr)&uc->uc_mcontext.gregs[VKI_EBP], OFFSET_x86_EBP, 368 sizeof(UWord)); 369 tst->arch.vex.guest_ESI = uc->uc_mcontext.gregs[VKI_ESI]; 370 VG_TRACK(copy_mem_to_reg, part, tid, 371 (Addr)&uc->uc_mcontext.gregs[VKI_ESI], OFFSET_x86_ESI, 372 sizeof(UWord)); 373 tst->arch.vex.guest_EDI = uc->uc_mcontext.gregs[VKI_EDI]; 374 VG_TRACK(copy_mem_to_reg, part, tid, 375 (Addr)&uc->uc_mcontext.gregs[VKI_EDI], OFFSET_x86_EDI, 376 sizeof(UWord)); 377 tst->arch.vex.guest_ESP = uc->uc_mcontext.gregs[VKI_UESP]; 378 VG_TRACK(copy_mem_to_reg, part, tid, 379 (Addr)&uc->uc_mcontext.gregs[VKI_UESP], OFFSET_x86_ESP, 380 sizeof(UWord)); 381 382 if (esp_is_thrptr) { 383 /* The thrptr value is passed by libc to the kernel in the otherwise 384 unused ESP field. This is used when a new thread is created. */ 385 VG_TRACK(pre_mem_read, part, tid, 386 "restore_machine_context(uc->uc_mcontext.gregs[VKI_ESP])", 387 (Addr)&uc->uc_mcontext.gregs[VKI_ESP], sizeof(UWord)); 388 if (uc->uc_mcontext.gregs[VKI_ESP]) { 389 tst->os_state.thrptr = uc->uc_mcontext.gregs[VKI_ESP]; 390 ML_(update_gdt_lwpgs)(tid); 391 } 392 } 393 394 /* Ignore ERR and TRAPNO. */ 395 396 /* Segment registers */ 397 tst->arch.vex.guest_CS = uc->uc_mcontext.gregs[VKI_CS]; 398 VG_TRACK(copy_mem_to_reg, part, tid, 399 (Addr)&uc->uc_mcontext.gregs[VKI_CS], OFFSET_x86_CS, 400 sizeof(UShort)); 401 tst->arch.vex.guest_DS = uc->uc_mcontext.gregs[VKI_DS]; 402 VG_TRACK(copy_mem_to_reg, part, tid, 403 (Addr)&uc->uc_mcontext.gregs[VKI_DS], OFFSET_x86_DS, 404 sizeof(UShort)); 405 tst->arch.vex.guest_SS = uc->uc_mcontext.gregs[VKI_SS]; 406 VG_TRACK(copy_mem_to_reg, part, tid, 407 (Addr)&uc->uc_mcontext.gregs[VKI_SS], OFFSET_x86_SS, 408 sizeof(UShort)); 409 tst->arch.vex.guest_ES = uc->uc_mcontext.gregs[VKI_ES]; 410 VG_TRACK(copy_mem_to_reg, part, tid, 411 (Addr)&uc->uc_mcontext.gregs[VKI_ES], OFFSET_x86_ES, 412 sizeof(UShort)); 413 tst->arch.vex.guest_FS = uc->uc_mcontext.gregs[VKI_FS]; 414 VG_TRACK(copy_mem_to_reg, part, tid, 415 (Addr)&uc->uc_mcontext.gregs[VKI_FS], OFFSET_x86_FS, 416 sizeof(UShort)); 417 tst->arch.vex.guest_GS = uc->uc_mcontext.gregs[VKI_GS]; 418 VG_TRACK(copy_mem_to_reg, part, tid, 419 (Addr)&uc->uc_mcontext.gregs[VKI_GS], OFFSET_x86_GS, 420 sizeof(UShort)); 421 422 /* Eflags */ 423 { 424 UInt eflags; 425 UInt orig_eflags; 426 UInt new_eflags; 427 Bool ok_restore = False; 428 429 VG_TRACK(pre_mem_read, part, tid, 430 "restore_machine_context(uc->uc_mcontext.gregs[VKI_EFL])", 431 (Addr)&uc->uc_mcontext.gregs[VKI_EFL], sizeof(UWord)); 432 eflags = uc->uc_mcontext.gregs[VKI_EFL]; 433 orig_eflags = LibVEX_GuestX86_get_eflags(&tst->arch.vex); 434 new_eflags = eflags; 435 /* The kernel disallows the ID flag to be changed via the setcontext 436 call, thus do the same. */ 437 if (orig_eflags & VKI_EFLAGS_ID_BIT) 438 new_eflags |= VKI_EFLAGS_ID_BIT; 439 else 440 new_eflags &= ~VKI_EFLAGS_ID_BIT; 441 LibVEX_GuestX86_put_eflags(new_eflags, &tst->arch.vex); 442 VG_TRACK(post_reg_write, part, tid, 443 offsetof(VexGuestX86State, guest_CC_DEP1), sizeof(UWord)); 444 VG_TRACK(post_reg_write, part, tid, 445 offsetof(VexGuestX86State, guest_CC_DEP2), sizeof(UWord)); 446 447 /* Check if this context was created by us in VG_(save_context). In 448 that case, try to restore the CC_OP, CC_DEP1, CC_DEP2 and CC_NDEP 449 values which we previously stashed into unused members of the 450 context. */ 451 if (eflags != ~VKI_UC_GUEST_EFLAGS_NEG(uc)) { 452 VG_(debugLog)(1, "syswrap-solaris", 453 "The eflags value was restored from an " 454 "explicitly set value in thread %u.\n", tid); 455 ok_restore = True; 456 } 457 else { 458 UInt buf[5]; 459 UInt checksum; 460 461 buf[0] = VKI_UC_GUEST_CC_OP(uc); 462 buf[1] = VKI_UC_GUEST_CC_NDEP(uc); 463 buf[2] = VKI_UC_GUEST_CC_DEP1(uc); 464 buf[3] = VKI_UC_GUEST_CC_DEP2(uc); 465 buf[4] = eflags; 466 checksum = ML_(fletcher32)((UShort*)&buf, 467 sizeof(buf) / sizeof(UShort)); 468 if (checksum == VKI_UC_GUEST_EFLAGS_CHECKSUM(uc)) { 469 /* Check ok, the full restoration is possible. */ 470 VG_(debugLog)(1, "syswrap-solaris", 471 "The CC_* guest state values were fully " 472 "restored in thread %u.\n", tid); 473 ok_restore = True; 474 475 tst->arch.vex.guest_CC_OP = VKI_UC_GUEST_CC_OP(uc); 476 tst->arch.vex.guest_CC_NDEP = VKI_UC_GUEST_CC_NDEP(uc); 477 tst->arch.vex.guest_CC_DEP1 = VKI_UC_GUEST_CC_DEP1(uc); 478 VG_TRACK(copy_mem_to_reg, part, tid, 479 (Addr)&VKI_UC_GUEST_CC_DEP1(uc), 480 offsetof(VexGuestX86State, guest_CC_DEP1), 481 sizeof(UWord)); 482 tst->arch.vex.guest_CC_DEP2 = VKI_UC_GUEST_CC_DEP2(uc); 483 VG_TRACK(copy_mem_to_reg, part, tid, 484 (Addr)&VKI_UC_GUEST_CC_DEP2(uc), 485 offsetof(VexGuestX86State, guest_CC_DEP2), 486 sizeof(UWord)); 487 } 488 } 489 490 if (!ok_restore) 491 VG_(debugLog)(1, "syswrap-solaris", 492 "Cannot fully restore the CC_* guest state " 493 "values, using approximate eflags in thread " 494 "%u.\n", tid); 495 } 496 } 497 498 if (uc->uc_flags & VKI_UC_FPU) { 499 /* FPU */ 500 VexEmNote note; 501 SizeT i; 502 503 /* x87 */ 504 /* Flags and control words */ 505 VG_TRACK(pre_mem_read, part, tid, 506 "restore_machine_context(uc->uc_mcontext.fpregs..x87_state)", 507 (Addr)&fs->state, 28); 508 /* ST registers */ 509 for (i = 0; i < 8; i++) { 510 Addr addr = (Addr)&fs->state + 28 + i * 10; 511 VG_TRACK(copy_mem_to_reg, part, tid, addr, 512 offsetof(VexGuestX86State, guest_FPREG[i]), sizeof(ULong)); 513 } 514 note = LibVEX_GuestX86_put_x87((UChar*)&fs->state, &tst->arch.vex); 515 if (note != EmNote_NONE) 516 VG_(message)(Vg_UserMsg, 517 "Error restoring x87 state in thread %u: %s.\n", 518 tid, LibVEX_EmNote_string(note)); 519 520 /* SSE */ 521 VG_TRACK(pre_mem_read, part, tid, 522 "restore_machine_context(uc->uc_mcontext.fpregs..mxcsr)", 523 (Addr)&fs->mxcsr, sizeof(fs->mxcsr)); 524 note = LibVEX_GuestX86_put_mxcsr(fs->mxcsr, &tst->arch.vex); 525 if (note != EmNote_NONE) 526 VG_(message)(Vg_UserMsg, 527 "Error restoring mxcsr state in thread %u: %s.\n", 528 tid, LibVEX_EmNote_string(note)); 529 /* XMM registers */ 530 #define COPY_IN_XMM(src, dest) \ 531 do { \ 532 dest[0] = src._l[0]; \ 533 dest[1] = src._l[1]; \ 534 dest[2] = src._l[2]; \ 535 dest[3] = src._l[3]; \ 536 } while (0) 537 COPY_IN_XMM(fs->xmm[0], tst->arch.vex.guest_XMM0); 538 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[0], 539 offsetof(VexGuestX86State, guest_XMM0), sizeof(U128)); 540 COPY_IN_XMM(fs->xmm[1], tst->arch.vex.guest_XMM1); 541 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[1], 542 offsetof(VexGuestX86State, guest_XMM1), sizeof(U128)); 543 COPY_IN_XMM(fs->xmm[2], tst->arch.vex.guest_XMM2); 544 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[2], 545 offsetof(VexGuestX86State, guest_XMM2), sizeof(U128)); 546 COPY_IN_XMM(fs->xmm[3], tst->arch.vex.guest_XMM3); 547 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[3], 548 offsetof(VexGuestX86State, guest_XMM3), sizeof(U128)); 549 COPY_IN_XMM(fs->xmm[4], tst->arch.vex.guest_XMM4); 550 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[4], 551 offsetof(VexGuestX86State, guest_XMM4), sizeof(U128)); 552 COPY_IN_XMM(fs->xmm[5], tst->arch.vex.guest_XMM5); 553 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[5], 554 offsetof(VexGuestX86State, guest_XMM5), sizeof(U128)); 555 COPY_IN_XMM(fs->xmm[6], tst->arch.vex.guest_XMM6); 556 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[6], 557 offsetof(VexGuestX86State, guest_XMM6), sizeof(U128)); 558 COPY_IN_XMM(fs->xmm[7], tst->arch.vex.guest_XMM7); 559 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[7], 560 offsetof(VexGuestX86State, guest_XMM7), sizeof(U128)); 561 #undef COPY_IN_XMM 562 } 563 } 564 565 /* Allocate GDT for a given thread. */ 566 void ML_(setup_gdt)(VexGuestX86State *vex) 567 { 568 Addr gdt = (Addr)VG_(calloc)("syswrap-solaris-x86.gdt", 569 VEX_GUEST_X86_GDT_NENT, 570 sizeof(VexGuestX86SegDescr)); 571 vex->guest_GDT = gdt; 572 } 573 574 /* Deallocate GDT for a given thread. */ 575 void ML_(cleanup_gdt)(VexGuestX86State *vex) 576 { 577 if (!vex->guest_GDT) 578 return; 579 VG_(free)((void*)vex->guest_GDT); 580 vex->guest_GDT = 0; 581 } 582 583 /* For a given thread, update the LWPGS descriptor in the thread's GDT 584 according to the thread pointer. */ 585 void ML_(update_gdt_lwpgs)(ThreadId tid) 586 { 587 ThreadState *tst = VG_(get_ThreadState)(tid); 588 Addr base = tst->os_state.thrptr; 589 VexGuestX86SegDescr *gdt = (VexGuestX86SegDescr*)tst->arch.vex.guest_GDT; 590 VexGuestX86SegDescr desc; 591 592 vg_assert(gdt); 593 594 VG_(memset)(&desc, 0, sizeof(desc)); 595 if (base) { 596 desc.LdtEnt.Bits.LimitLow = -1; 597 desc.LdtEnt.Bits.LimitHi = -1; 598 desc.LdtEnt.Bits.BaseLow = base & 0xffff; 599 desc.LdtEnt.Bits.BaseMid = (base >> 16) & 0xff; 600 desc.LdtEnt.Bits.BaseHi = (base >> 24) & 0xff; 601 desc.LdtEnt.Bits.Pres = 1; 602 desc.LdtEnt.Bits.Dpl = 3; /* SEL_UPL */ 603 desc.LdtEnt.Bits.Type = 19; /* SDT_MEMRWA */ 604 desc.LdtEnt.Bits.Granularity = 1; /* SDP_PAGES */ 605 desc.LdtEnt.Bits.Default_Big = 1; /* SDP_OP32 */ 606 } 607 608 gdt[VKI_GDT_LWPGS] = desc; 609 610 /* Write %gs. */ 611 tst->arch.vex.guest_GS = VKI_LWPGS_SEL; 612 VG_TRACK(post_reg_write, Vg_CoreSysCall, tid, OFFSET_x86_GS, 613 sizeof(UShort)); 614 } 615 616 617 /* --------------------------------------------------------------------- 618 PRE/POST wrappers for x86/Solaris-specific syscalls 619 ------------------------------------------------------------------ */ 620 621 #define PRE(name) DEFN_PRE_TEMPLATE(x86_solaris, name) 622 #define POST(name) DEFN_POST_TEMPLATE(x86_solaris, name) 623 624 /* implementation */ 625 626 PRE(sys_fstatat64) 627 { 628 /* int fstatat64(int fildes, const char *path, struct stat64 *buf, 629 int flag); */ 630 PRINT("sys_fstatat64 ( %ld, %#lx(%s), %#lx, %ld )", SARG1, ARG2, 631 (HChar*)ARG2, ARG3, SARG4); 632 PRE_REG_READ4(long, "fstatat64", int, fildes, const char *, path, 633 struct stat64 *, buf, int, flag); 634 if (ARG2) 635 PRE_MEM_RASCIIZ("fstatat64(path)", ARG2); 636 PRE_MEM_WRITE("fstatat64(buf)", ARG3, sizeof(struct vki_stat64)); 637 638 /* Be strict. */ 639 if (ARG1 != VKI_AT_FDCWD && 640 !ML_(fd_allowed)(ARG1, "fstatat64", tid, False)) 641 SET_STATUS_Failure(VKI_EBADF); 642 } 643 644 POST(sys_fstatat64) 645 { 646 POST_MEM_WRITE(ARG3, sizeof(struct vki_stat64)); 647 } 648 649 PRE(sys_openat64) 650 { 651 /* int openat64(int fildes, const char *filename, int flags); 652 int openat64(int fildes, const char *filename, int flags, mode_t mode); 653 */ 654 *flags |= SfMayBlock; 655 656 if (ARG3 & VKI_O_CREAT) { 657 /* 4-arg version */ 658 PRINT("sys_openat64 ( %ld, %#lx(%s), %ld, %ld )", SARG1, ARG2, 659 (HChar*)ARG2, SARG3, SARG4); 660 PRE_REG_READ4(long, "openat64", int, fildes, const char *, filename, 661 int, flags, vki_mode_t, mode); 662 } 663 else { 664 /* 3-arg version */ 665 PRINT("sys_openat64 ( %ld, %#lx(%s), %ld )", SARG1, ARG2, (HChar*)ARG2, 666 SARG3); 667 PRE_REG_READ3(long, "openat64", int, fildes, const char *, filename, 668 int, flags); 669 } 670 671 PRE_MEM_RASCIIZ("openat64(filename)", ARG2); 672 673 /* Be strict. */ 674 if (ARG1 != VKI_AT_FDCWD && !ML_(fd_allowed)(ARG1, "openat64", tid, False)) 675 SET_STATUS_Failure(VKI_EBADF); 676 } 677 678 POST(sys_openat64) 679 { 680 if (!ML_(fd_allowed)(RES, "openat64", tid, True)) { 681 VG_(close)(RES); 682 SET_STATUS_Failure(VKI_EMFILE); 683 } 684 else if (VG_(clo_track_fds)) 685 ML_(record_fd_open_with_given_name)(tid, RES, (HChar*)ARG2); 686 } 687 688 PRE(sys_llseek32) 689 { 690 /* offset_t llseek(int fildes, offset_t offset, int whence); */ 691 PRINT("sys_llseek32 ( %ld, %#lx, %#lx, %ld )", SARG1, ARG2, ARG3, SARG4); 692 PRE_REG_READ4(long, "llseek", int, fildes, vki_u32, offset_low, 693 vki_u32, offset_high, int, whence); 694 695 /* Stay sane. */ 696 if (!ML_(fd_allowed)(ARG1, "llseek", tid, False)) 697 SET_STATUS_Failure(VKI_EBADF); 698 } 699 700 PRE(sys_mmap64) 701 { 702 /* void *mmap64(void *addr, size_t len, int prot, int flags, 703 int fildes, uint32_t offlo, uint32_t offhi); */ 704 /* Note this wrapper assumes a little-endian architecture, offlo and offhi 705 have to be swapped if a big-endian architecture is present. */ 706 #if !defined(VG_LITTLEENDIAN) 707 #error "Unexpected endianness." 708 #endif /* !VG_LITTLEENDIAN */ 709 710 SysRes r; 711 ULong u; 712 Off64T offset; 713 714 /* Stay sane. */ 715 vg_assert(VKI_PAGE_SIZE == 4096); 716 vg_assert(sizeof(u) == sizeof(offset)); 717 718 PRINT("sys_mmap ( %#lx, %#lx, %#lx, %#lx, %ld, %#lx, %#lx )", 719 ARG1, ARG2, ARG3, ARG4, SARG5, ARG6, ARG7); 720 PRE_REG_READ7(long, "mmap", void *, start, vki_size_t, length, 721 int, prot, int, flags, int, fd, uint32_t, offlo, 722 uint32_t, offhi); 723 724 /* The offlo and offhi values can actually represent a negative value. 725 Make sure it's passed correctly to the generic mmap wrapper. */ 726 u = ((ULong)ARG7 << 32) + ARG6; 727 offset = *(Off64T*)&u; 728 729 r = ML_(generic_PRE_sys_mmap)(tid, ARG1, ARG2, ARG3, ARG4, ARG5, offset); 730 SET_STATUS_from_SysRes(r); 731 } 732 733 PRE(sys_stat64) 734 { 735 /* int stat64(const char *path, struct stat64 *buf); */ 736 PRINT("sys_stat64 ( %#lx(%s), %#lx )", ARG1, (HChar*)ARG1, ARG2); 737 PRE_REG_READ2(long, "stat64", const char *, path, struct stat64 *, buf); 738 739 PRE_MEM_RASCIIZ("stat64(path)", ARG1); 740 PRE_MEM_WRITE("stat64(buf)", ARG2, sizeof(struct vki_stat64)); 741 } 742 743 POST(sys_stat64) 744 { 745 POST_MEM_WRITE(ARG2, sizeof(struct vki_stat64)); 746 } 747 748 PRE(sys_lstat64) 749 { 750 /* int lstat64(const char *path, struct stat64 *buf); */ 751 PRINT("sys_lstat64 ( %#lx(%s), %#lx )", ARG1, (HChar*)ARG1, ARG2); 752 PRE_REG_READ2(long, "lstat64", const char *, path, struct stat64 *, buf); 753 754 PRE_MEM_RASCIIZ("lstat64(path)", ARG1); 755 PRE_MEM_WRITE("lstat64(buf)", ARG2, sizeof(struct vki_stat64)); 756 } 757 758 POST(sys_lstat64) 759 { 760 POST_MEM_WRITE(ARG2, sizeof(struct vki_stat64)); 761 } 762 763 PRE(sys_fstat64) 764 { 765 /* int fstat64(int fildes, struct stat64 *buf); */ 766 PRINT("sys_fstat64 ( %ld, %#lx )", SARG1, ARG2); 767 PRE_REG_READ2(long, "fstat64", int, fildes, struct stat64 *, buf); 768 PRE_MEM_WRITE("fstat64(buf)", ARG2, sizeof(struct vki_stat64)); 769 770 /* Be strict. */ 771 if (!ML_(fd_allowed)(ARG1, "fstat64", tid, False)) 772 SET_STATUS_Failure(VKI_EBADF); 773 } 774 775 POST(sys_fstat64) 776 { 777 POST_MEM_WRITE(ARG2, sizeof(struct vki_stat64)); 778 } 779 780 static void do_statvfs64_post(struct vki_statvfs64 *stats, ThreadId tid) 781 { 782 POST_FIELD_WRITE(stats->f_bsize); 783 POST_FIELD_WRITE(stats->f_frsize); 784 POST_FIELD_WRITE(stats->f_blocks); 785 POST_FIELD_WRITE(stats->f_bfree); 786 POST_FIELD_WRITE(stats->f_bavail); 787 POST_FIELD_WRITE(stats->f_files); 788 POST_FIELD_WRITE(stats->f_ffree); 789 POST_FIELD_WRITE(stats->f_favail); 790 POST_FIELD_WRITE(stats->f_fsid); 791 POST_MEM_WRITE((Addr) stats->f_basetype, VG_(strlen)(stats->f_basetype) + 1); 792 POST_FIELD_WRITE(stats->f_flag); 793 POST_FIELD_WRITE(stats->f_namemax); 794 POST_MEM_WRITE((Addr) stats->f_fstr, VG_(strlen)(stats->f_fstr) + 1); 795 } 796 797 PRE(sys_statvfs64) 798 { 799 /* int statvfs64(const char *path, struct statvfs64 *buf); */ 800 *flags |= SfMayBlock; 801 PRINT("sys_statvfs64 ( %#lx(%s), %#lx )", ARG1, (HChar *) ARG1, ARG2); 802 PRE_REG_READ2(long, "statvfs64", const char *, path, 803 struct vki_statvfs64 *, buf); 804 PRE_MEM_RASCIIZ("statvfs64(path)", ARG1); 805 PRE_MEM_WRITE("statvfs64(buf)", ARG2, sizeof(struct vki_statvfs64)); 806 } 807 808 POST(sys_statvfs64) 809 { 810 do_statvfs64_post((struct vki_statvfs64 *) ARG2, tid); 811 } 812 813 PRE(sys_fstatvfs64) 814 { 815 /* int fstatvfs64(int fd, struct statvfs64 *buf); */ 816 *flags |= SfMayBlock; 817 PRINT("sys_fstatvfs64 ( %ld, %#lx )", SARG1, ARG2); 818 PRE_REG_READ2(long, "fstatvfs64", int, fd, struct vki_statvfs64 *, buf); 819 PRE_MEM_WRITE("fstatvfs64(buf)", ARG2, sizeof(struct vki_statvfs64)); 820 821 /* Be strict. */ 822 if (!ML_(fd_allowed)(ARG1, "fstatvfs64", tid, False)) 823 SET_STATUS_Failure(VKI_EBADF); 824 } 825 826 POST(sys_fstatvfs64) 827 { 828 do_statvfs64_post((struct vki_statvfs64 *) ARG2, tid); 829 } 830 831 PRE(sys_setrlimit64) 832 { 833 /* int setrlimit64(int resource, struct rlimit64 *rlim); */ 834 struct vki_rlimit64 *limit = (struct vki_rlimit64 *)ARG2; 835 PRINT("sys_setrlimit64 ( %ld, %#lx )", SARG1, ARG2); 836 PRE_REG_READ2(long, "setrlimit64", int, resource, struct rlimit64 *, rlim); 837 PRE_MEM_READ("setrlimit64(rlim)", ARG2, sizeof(struct vki_rlimit64)); 838 839 if (limit && limit->rlim_cur > limit->rlim_max) 840 SET_STATUS_Failure(VKI_EINVAL); 841 else if (ARG1 == VKI_RLIMIT_NOFILE) { 842 if (limit->rlim_cur > VG_(fd_hard_limit) || 843 limit->rlim_max != VG_(fd_hard_limit)) { 844 SET_STATUS_Failure(VKI_EPERM); 845 } 846 else { 847 VG_(fd_soft_limit) = limit->rlim_cur; 848 SET_STATUS_Success(0); 849 } 850 } 851 else if (ARG1 == VKI_RLIMIT_DATA) { 852 if (limit->rlim_cur > VG_(client_rlimit_data).rlim_max || 853 limit->rlim_max > VG_(client_rlimit_data).rlim_max) { 854 SET_STATUS_Failure(VKI_EPERM); 855 } 856 else { 857 VG_(client_rlimit_data).rlim_max = limit->rlim_max; 858 VG_(client_rlimit_data).rlim_cur = limit->rlim_cur; 859 SET_STATUS_Success(0); 860 } 861 } 862 else if (ARG1 == VKI_RLIMIT_STACK && tid == 1) { 863 if (limit->rlim_cur > VG_(client_rlimit_stack).rlim_max || 864 limit->rlim_max > VG_(client_rlimit_stack).rlim_max) { 865 SET_STATUS_Failure(VKI_EPERM); 866 } 867 else { 868 /* Change the value of client_stack_szB to the rlim_cur value but 869 only if it is smaller than the size of the allocated stack for the 870 client. */ 871 if (limit->rlim_cur <= VG_(clstk_max_size)) 872 VG_(threads)[tid].client_stack_szB = limit->rlim_cur; 873 874 VG_(client_rlimit_stack).rlim_max = limit->rlim_max; 875 VG_(client_rlimit_stack).rlim_cur = limit->rlim_cur; 876 SET_STATUS_Success(0); 877 } 878 } 879 } 880 881 PRE(sys_getrlimit64) 882 { 883 /* int getrlimit64(int resource, struct rlimit64 *rlim); */ 884 PRINT("sys_getrlimit64 ( %ld, %#lx )", SARG1, ARG2); 885 PRE_REG_READ2(long, "getrlimit64", 886 int, resource, struct rlimit64 *, rlim); 887 PRE_MEM_WRITE("getrlimit64(rlim)", ARG2, sizeof(struct vki_rlimit64)); 888 } 889 890 POST(sys_getrlimit64) 891 { 892 /* Based on common_post_getrlimit() from syswrap-generic.c. */ 893 struct vki_rlimit64 *rlim = (struct vki_rlimit64*)ARG2; 894 895 POST_MEM_WRITE(ARG2, sizeof(struct vki_rlimit64)); 896 897 switch (ARG1 /*resource*/) { 898 case VKI_RLIMIT_NOFILE: 899 rlim->rlim_cur = VG_(fd_soft_limit); 900 rlim->rlim_max = VG_(fd_hard_limit); 901 break; 902 case VKI_RLIMIT_DATA: 903 rlim->rlim_cur = VG_(client_rlimit_data).rlim_cur; 904 rlim->rlim_max = VG_(client_rlimit_data).rlim_max; 905 break; 906 case VKI_RLIMIT_STACK: 907 rlim->rlim_cur = VG_(client_rlimit_stack).rlim_cur; 908 rlim->rlim_max = VG_(client_rlimit_stack).rlim_max; 909 break; 910 } 911 } 912 913 PRE(sys_pread64) 914 { 915 /* ssize32_t pread64(int fd, void *buf, size32_t count, 916 uint32_t offset_1, uint32_t offset_2); 917 */ 918 *flags |= SfMayBlock; 919 PRINT("sys_pread64 ( %ld, %#lx, %lu, %#lx, %#lx )", 920 SARG1, ARG2, ARG3, ARG4, ARG5); 921 PRE_REG_READ5(long, "pread64", int, fd, void *, buf, vki_size32_t, count, 922 vki_uint32_t, offset_1, vki_uint32_t, offset_2); 923 PRE_MEM_WRITE("pread64(buf)", ARG2, ARG3); 924 925 /* Be strict. */ 926 if (!ML_(fd_allowed)(ARG1, "pread64", tid, False)) 927 SET_STATUS_Failure(VKI_EBADF); 928 } 929 930 POST(sys_pread64) 931 { 932 POST_MEM_WRITE(ARG2, RES); 933 } 934 935 PRE(sys_pwrite64) 936 { 937 /* ssize32_t pwrite64(int fd, void *buf, size32_t count, 938 uint32_t offset_1, uint32_t offset_2); 939 */ 940 *flags |= SfMayBlock; 941 PRINT("sys_pwrite64 ( %ld, %#lx, %lu, %#lx, %#lx )", 942 SARG1, ARG2, ARG3, ARG4, ARG5); 943 PRE_REG_READ5(long, "pwrite64", int, fd, void *, buf, vki_size32_t, count, 944 vki_uint32_t, offset_1, vki_uint32_t, offset_2); 945 PRE_MEM_READ("pwrite64(buf)", ARG2, ARG3); 946 947 /* Be strict. */ 948 if (!ML_(fd_allowed)(ARG1, "pwrite64", tid, False)) 949 SET_STATUS_Failure(VKI_EBADF); 950 } 951 952 PRE(sys_open64) 953 { 954 /* int open64(const char *filename, int flags); 955 int open64(const char *filename, int flags, mode_t mode); */ 956 *flags |= SfMayBlock; 957 958 if (ARG2 & VKI_O_CREAT) { 959 /* 3-arg version */ 960 PRINT("sys_open64 ( %#lx(%s), %#lx, %ld )", ARG1, (HChar*)ARG1, ARG2, 961 SARG3); 962 PRE_REG_READ3(long, "open64", const char *, filename, int, flags, 963 vki_mode_t, mode); 964 } 965 else { 966 /* 2-arg version */ 967 PRINT("sys_open64 ( %#lx(%s), %#lx )", ARG1, (HChar*)ARG1, ARG2); 968 PRE_REG_READ2(long, "open64", const char *, filename, int, flags); 969 } 970 PRE_MEM_RASCIIZ("open(filename)", ARG1); 971 } 972 973 POST(sys_open64) 974 { 975 if (!ML_(fd_allowed)(RES, "open64", tid, True)) { 976 VG_(close)(RES); 977 SET_STATUS_Failure(VKI_EMFILE); 978 } 979 else if (VG_(clo_track_fds)) 980 ML_(record_fd_open_with_given_name)(tid, RES, (HChar*)ARG1); 981 } 982 983 #undef PRE 984 #undef POST 985 986 #endif // defined(VGP_x86_solaris) 987 988 /*--------------------------------------------------------------------*/ 989 /*--- end ---*/ 990 /*--------------------------------------------------------------------*/ 991
